Yes - it's odd:-
Though the parent company has long since gone ( like C= ) and the RiscOS scene has never been as wide-spread or as prolific with regard to software as AmigaOS, yet there remains current hardware + OS development where there has been none for years with Amiga.
( I don't count MorphOS or AOS4 as for all its merritts MOS is a side-branch & AOS4 seems to have been killed-off. )
Here's a somewhat off-topic question:
How is it that a tiny community like 'RiscOS' continues to develop the OS + Hardware + Software & yet for the Amiga - nothing, but for what the remaining enthusiasts write?
( MacroSystems managed to produce the Draco in '94 so clones are doable )